ST7628
7.9.4 Frquency Temperature Gradient Compensation Coefficient
ST7628 will auto-switch frame rate on different temperature such as Figure 11.1. TA, TB and TC are frame rate
switching temperatures which can be defined by customer with command TMPRNG(see section 9.1.70). FA, FB, FC
and FD are switched frame rate which also can be defined by customer with command FRMSEL (see section 9.1.68).
The frame rate range is from 37.5Hz to 170Hz.
When the temperature is in increasing state, frame rate changes to the higher step at TA/TB/TC+TH(℃). When
the temperature is in decreasing state, frame rate changes to the lower step at TA/TB/TC. For example: TC=10℃
and TH=5℃, FC switches to FD at 15℃ but FD switches to FC at 10℃. Please take Figure 11.1for reference.
Figure 7.10
Note:
Please make sure to avoid any kind of heating source closing to ST7628 such as back light, to prevent
Vop is not anticipatve because of temperature compensate circuit worked.
Ver 1.4
59/213
2008/08
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
